Syubaikah Badrul, et al. “Effect of Carbon Nanoparticles (CNPs) As an Additive on the Performance of Food-Grade Lubricant Grease Formulation”. Multidisciplinary Applied Research and Innovation, vol. 5, no. 3, Dec. 2024, pp. 58-63, https://publisher.uthm.edu.my/periodicals/index.php/mari/article/view/13765.